Abstract: A positive electrode active material and a preparation method therefor, a positive electrode plate containing same, a secondary battery, and a power consuming device are provided. The positive electrode active material has a core-shell structure, comprising an inner core and a shell coating the inner core, wherein the inner core comprises Li1+xMn1?yAyP1?zRzO4, and the shell comprises a first coating layer coating the inner core, and a second coating layer coating the first coating layer, and a third coating layer coating the second coating layer. The positive electrode active material of the present application enables the secondary battery to have a higher energy density, and a good rate performance, cycling performance and safety performance.

Abstract: A battery pack in one aspect of the present disclosure includes a battery and a controller provided with a counter value. During discharge of the battery pack, the controller calculates an addition value in accordance with a total number of use of the battery pack under a specified condition. The controller updates the counter value by adding the addition value. The controller prohibits the discharge of the battery pack in response to the counter value reaching a protection threshold.

Abstract: A battery ejection system is disclosed. The battery ejection system comprises a pressure vessel, a battery submodule positioned at least partway in the pressure vessel and configured to release gas into the pressure vessel, and a seal of the pressure vessel configured to release in the event a pressure level in the pressure vessel exceeds a threshold pressure level. The battery submodule is configured to be ejected from an electrical connection in the event the seal is released.

Abstract: To provide a fuel cell system configured to, at the time of starting the fuel cell system, purge gas other than fuel gas from the fuel electrodes of a fuel cell stack in a short time. A fuel cell system comprising: a fuel cell stack, an ejector set, a fuel gas supplier, a circulation flow path, a mixed gas supply flow path, a pressure detector which detects pressure information of a fuel electrode side of the fuel cell stack, a fuel off-gas discharger which discharges the fuel off-gas, in which a concentration of the fuel gas is a predetermined concentration or less, to the outside, and a controller, wherein the ejector set includes a first ejector and a second ejector in parallel, the first ejector being an ejector which supplies first mixed gas to the fuel electrodes of the fuel cell stack, and the second ejector being an ejector which supplies second mixed gas, in which a content ratio of the circulation gas is larger than the first mixed gas, to the fuel electrodes of the fuel cell stack.

Abstract: A method of controlling a hydrogen partial pressure can be carried out in a fuel cell system including a stack having a hydrogen electrode and an air electrode. The method includes: determining a point of time to purge the hydrogen electrode using a hydrogen concentration at an outlet of the hydrogen electrode or an accumulated amount of charge generated in the stack; and setting a target supply pressure of hydrogen supplied to the stack, in which the target hydrogen supply pressure is set in consideration of a hydrogen pressure and a partial pressure of nitrogen resulting from crossover in the stack.

Abstract: Provided is a fuel cell system configured to accurately control the gas flow rate and pressure ratio of a turbo-type air compressor. The fuel cell system is a fuel cell system comprising: a fuel cell, an air compressor, an oxidant gas supply flow path, an oxidant gas discharge flow path, an oxidant gas outlet valve, a bypass flow path, a bypass valve, an atmospheric pressure sensor, an outside temperature sensor, a flow rate sensor, a rotational frequency sensor, an angle sensor, a controller, and a calculator configured to estimate the flow resistance Zd, total pressure, partial pressure and energy of each of members that are the air compressor, the oxidant gas outlet valve and the bypass valve.

Abstract: Improved battery systems have been developed for lithium-ion based batteries. The improved battery systems consist of two-additive mixtures in an electrolyte solvent. Such battery systems are prepared by assembling a positive electrode and a negative electrode in the sealed cell, removing residual water from the sealed cell, filling the sealed cell with a nonaqueous electrolyte under an inert atmosphere, vacuum-sealing the sealed cell, carrying out a formation process comprising charging and discharging the sealed cell until the sealed cell achieves an initial capacity. The nonaqueous electrolyte includes lithium ions, a first nonaqueous solvent comprising a carbonate solvent, a second nonaquaeous solvent comprising methyl acetate, and an additive mixture of a first operative additive of either vinylene carbonate or fluoroethylene carbonate and a second operative additive of 2-furanone. Gas formation is suppressed in the battery system during the formation process.

Abstract: Systems and methods are provided for capturing gas byproducts of a fuel cell system, such as nitrogen. Instead of dispelling the gas byproducts, a byproduct management system can engage in selective isolation, compression, and storage of the gas byproducts in various storage tanks. The compression and storage of the gas byproducts can be effectuated using excess energy, e.g., regenerative energy.

Abstract: An integrated solar hydrogen production module includes a plurality of PV cells supported on a housing of the module. The module has an energy storage system which includes a rechargeable metal ion battery and a flow battery. The metal ion battery is charged by the PV cells. An electrolyser for converting water to gaseous hydrogen and oxygen can be powered directly by the PV cells or by either of the rechargeable metal ion battery and a flow battery. The PV cells, the metal-ion battery, the flow battery membrane and the electrolyser are electrically coupled together and integrated into or carried by the module housing. Electrically powered and solar thermal heaters can be incorporated into or with the module to heat the water in the electrolysers. A pump pressurises the water to facilitate the pressurisation of hydrogen and oxygen produced by the electrolysis.

Abstract: A fuel cell includes a cell stack including unit cells stacked in a first direction, first and second end plates at first and second ends of the cell stack, respectively, the first and second end plates each including a metal part and a resin part, an enclosure engaged with the first and second end plates to surround the cell stack, a first outer gasket between the resin part of the first end plate and the enclosure and a second outer gasket between the resin part of the second end plate and the enclosure, each of the resin parts including cutoff portions spaced apart from each other, and each of the cutoff portions extending in a second direction intersecting the first direction or in a third direction intersecting each of the first direction and the second direction to expose the metal parts.

Abstract: The invention provides a hybrid power system, which integrates an internal combustion engine with a solid oxide fuel cell (SOFC) stack and provides power for the vehicle through the internal combustion engine at first in the preheating stage of the SOFC stack, thereby solving the problem that an SOFC stack is unable to provide power for the vehicle in the preheating stage. At the same time, the internal combustion engine burns fuel gas, outputs high temperature exhaust gas, heats the heat exchanger with the high temperature exhaust gas, then discharges the exhaust gas from an exhaust turbine and inhales air from the outside of the system. The air first passes through an air preheater, then passes through a heat exchanger and then enters the inside of the SOFC stack, preheats the air preheater through an air pipeline and then is discharged. After multiple cycles, the preheating of the SOFC stack is completed.

Abstract: The disclosure provides a nozzle for combustion and reforming reaction including a fuel pipe, a reformer, an activation pipe, an activation catalyst, and a reformation catalyst. The fuel pipe includes an annular wall and an end wall connected to an end of the annular wall. The fuel pipe has at least one vent hole penetrating through the annular wall and at least one outlet penetrating through the end wall. The reformer is disposed in the fuel pipe. The activation pipe is disposed in the fuel pipe and disposed through the reformer. A distance between the activation pipe and the outlet is larger than a distance between the vent hole and the outlet. The activation catalyst is arranged in the activation pipe. The reformation catalyst is arranged in the reformer and located outside the activation pipe. The disclosure also provides a combustor and a fuel cell system having the nozzle.

Abstract: In this fuel cell, a cathode-side porous film that covers a cathode electrode is interposed between the cathode electrode and an air supply layer, the cathode electrode constituting electrolyte film/electrode structures. In addition, breathing holes are formed in the cathode-side porous film, and the air flowing through air supply passages passes through the breathing holes and is supplied to the cathode electrode.

Abstract: A method for producing an electrode for a non-aqueous secondary battery is provided, the method includes: mixing a compound containing lithium, a compound containing nickel, and barium titanate to obtain a mixture; heat-treating the mixture to obtain a first composition containing a lithium-transition metal composite oxide; preparing an electrode composition containing the first composition, a conductive aid, and a binder; and applying and compressing the electrode composition on a current collector to form an active material layer with a density of from 2.4 g/cm3 to 3.6 g/cm3 on the current collector.

Abstract: The embodiments of the application provides an end cover assembly, a battery cell, a battery module and a device, the end cover assembly is used for the battery cell, the end cover assembly includes an end cover; an electrode terminal disposed on the end cover; an insulating member for insulating the electrode terminal and the end cover and disposed to surround the electrode terminal; wherein the insulating member abuts the electrode terminal, at least one of the insulating member and the electrode terminal is provided with a stress relief groove, the stress relief groove is configured to absorb stress generated by the electrode terminal's abutting the insulating member.

Abstract: A carbon nanostructure producing method includes a growth step in which a plurality of catalyst particles in close contact with each other are separated in a flow of a carbon-containing gas so as to grow carbon nanotubes between the plurality of catalyst particles, and an elongation step in which the carbon nanotube is elongated by a wind pressure of the carbon-containing gas with at least one of the catalyst particles being retained.

Abstract: The present invention relates to use of a quaternary ammonium salt-type anthraquinone-based active material, and a salt cavern organic aqueous redox flow battery. The quaternary ammonium salt-type anthraquinone-based active material is used as a negative active material in a salt cavern battery, and a quaternary ammonium salt group is introduced, which can improve the solubility of anthraquinone in a neutral sodium chloride solution, thereby increasing the energy density of the battery. Also, the material has a relatively good stability, without the need for charging and discharging under the protection of an inert gas environment.

Abstract: In a fuel cell system, for example HTPEM fuel cells, especially for automobiles, a multi-stream heat exchange unit is employed in order to save space.

Abstract: A method for producing a positive electrode material for a nonaqueous secondary battery includes the steps of mixing a compound containing lithium, a compound containing nickel and BaTiO3 to form a mixed material; and sintering the mixed material to form a lithium transition metal composite oxide.

Abstract: A stack case of a fuel cell system includes a case body, a first end cover, and a second end cover. A recess is formed in an upper surface of the case body. An interruption control unit as an electrical equipment unit is placed in the recess. A plurality of first screw holes are formed in one end surface of the case body, and a plurality of second screw holes are formed in the other end surface of the case body. A first screw hole aligned with a recess in a direction in which a plurality of power generation cells are stacked together penetrates through the case body from one end surface of the case body to a side surface of the recess.